update PrintInt and change PutString to PutInt

code/userprog/synchconsole.cc

@@ -107,10 +107,10 @@ SynchConsoleOutput::PutChar(char ch)
 }
 
 void
-SynchConsoleOutput::PutString(char *str)
+SynchConsoleOutput::PutInt(int value)
 {
     lock->Acquire();
-    consoleOutput->PutString(str);
+    consoleOutput->PutInt(value);
     waitFor->P();
     lock->Release();
 }